Chemistry QuestionsStates Of Matter Questions for CBSE Class 11th

States Of Matter Questions for CBSE Class 11th

At Boyle’s temperature, the graph of Z v/s P is drawn for H 2 . Select incorrect graph(s) :

Molecular interactions between molecules is in order

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    Some of the following properties of liquids arise because of the molecular interaction and thermal energy I : vapour pressure II : surface tension III : viscosity They are

    A person living in Shimla observed that cooking food without using pressure cooker takes more time’ The reason for this observation is that at high altitude

    Which of the assumptions of the kinetic-molecular theory best explains the observations that a gas can be compressed?

    A mixture of Ar (40) and N 2 gases have a density of 1.40 g L -1 at STP. Hence, weight fraction of N 2 approximately in the mixture is

    At the same temperature and pressure which of the following gas will have highest KE per mol?

    A comparison is made at standard temperature and pressure (STP) of 0.50 mol H 2 (g) and 1.0 mol He ( g). The two gases will

    The average kinetic energy of an ideal gas per molecule in SI unit at 25°C will be

    One molecule is moving at a speed of 1 ms -1 and two molecules are moving at 2 ms -1 . Hence, root mean Square velocity is

    A quantity of gas is collected in a graduated tube over the mercury. The volume of the gas at 20°C is 50.0 mL and the level of the mercury in the tube is 100 mm above the outside mercury level. The barometer reads 750 mm. Volume at STP is

    Gases possess characteristic critical temperature which depends upon the magnitude of intermolecular forces between the particles. Following are the critical temperatures of some gases. Gases H 2 He O 2 N 2 Critical temperature in Kelvin 33.2 5.3 154.3 126 From the above what would be the order of liquefaction of these gases? Start writing the order from the gas liquefizing first

    A quantity of gas is confined in a chamber of constant volume. When the chamber is immersed in a bath of melting ice, the pressure of the gas is 1000 torr. Final temperature when the pressure manometer indicates an absolute pressure of 400 torr, is

    What weight of hydrogen at STP could be contained in a vessel that holds 4.8 g oxygen at STP?

    A quantity of hydrogen gas occupies a volume of 30.0 mL at a certain temperature and pressure. What volume would half this mass of hydrogen occupy at triple the absolute temperature if the pressure were one-ninth that of the original gas?

    Which has maximum value of mean free path?

    O 2 gas at STP contained in a flask was replaced by SO 2 under same conditions. The weight of SO 2 will be

    At what temperature will both Celsius and Fahrenheit scales read the same value?

    Which gas shows a real behaviour?

    A gas obeys the equation of state p(V – b) = RT where b is constant. The slope for an isochore will be

    To an evacuated vessel with movable piston, under external pressure of 1 atm, 0.1 mole of He and 1.0 mole of an unknown compound (vapour pressure 0.68 atm. at 0° C) are introduced. Considering the ideal gas behaviour, the total volume (in litre) of the gases at 0°C is close to the nearest integer

    The pressure exerted by 1 mol of CO 2 at 273 K is 34.98 atm. Assuming that volume occupied by CO 2 molecules is negligible, the value of van der Waals’ constant for attraction of CO 2 gas is

    2g of a gas X are introduced into an evacuated flask kept at 25°C. The pressure is found to be 1 atm. If 3g of another gas Y are added to the same flask, the total pressure becomes 1.5 atm. Assuming that ideal behaviour, the molecular mass ratio of MY and MX is :

    Which is compressible fluid?

    Select the correct statement(s).

    Graphically variation of log 10 p with 1/T is shown. If tan θ (slope of the line) = – 2K, Iatent heat of vaporisation of the given liquid is

    What weight of hydrogen at STP could be contained in a vessel that holds 3.36 L O 2 gas at STP?

    Which does not represent isobar given by Charles’ Iaw?

    What will be the new volume when 128 mL of gas at 20.0°C is heated to 40°C while pressure remains unchanged?

    As the temperature increases, average kinetic energy of molecules increases. What would be the effect of increase of temperature on pressure provided the volume is constant?

    “One gram molecule of a gas at NTP occupies 22.4 L”. This fact was derived from

    A gas at a pressure of 5.0 atm is heated from 0° to 546°C and is simultaneously compressed to one-third of its original volume. Hence, final pressure is

    A sealed container with gas at 2.00 atm is heated from 20.0 K to 40.0 K. The new pressure is

    If 4 g of oxygen diffuse through a very narrow hole, how much hydrogen would have diffused under identical conditions?

    A 34.0 L cylinder contains 212 g O 2 gas at 27°c.What mass of O 2 (g) must be released to reduce the pressure to 2.463 atm?

    A quantity of hydrogen gas occupies a volume of 30.0 mL at a certain temperature and pressure. What volume would half this mass of hydrogen occupy at triple the absolute temperature and the pressure were one-ninth that of the original gas?

    What per cent of a sample of nitrogen must be allowed to escape if its temperature, pressure and volume are to be changed as given?

    Select the correct statement (s).

    Which assumption of kinetic molecular theory is not followed when a real gas shows non-ideal behaviour?

    If ab V 2 is negligible, then second virial coefficient B in virial equation is

    For CO, isotherm is of the type as shown. near the point B, compressibiliry factor Z is about

    Which of the following contains greatest number of N atoms?

    NH 3 gas is liquefied more easily than N 2 . Hence,

    If V is the volume of one molecule of a gas under given conditions, then van der Waals’ constant b is

    N 2 + 3 H 2 ⟶ 2 NH 3 1 mole N 2 and 4 moles H 2 are taken in 15 L flask at 27°C. After complete conversion of N 2 into NH 3 , 5 L of H 2 O is added. Pressure set up in the flask is

    A mixture of 50.0 mL of NH 3 and 60.0 mL of O 2 gas reacts as 4 NH 3 ( g ) + 5 O 2 ( g ) ⟶ 4 NO + 6 H 2 O ( g ) If all the gases are at the same temperature and pressure and the reaction continues until one of the gases is completely consumed, what volume of water vapour is produced?

    See the figure The valves of X and Y are opened simultaneously. The white fumes of NH 4 CI will first form at

    X mL of H 2 gas effuse through a hole in a container in 5 s. The time taken for the effusion of the same volume of the gas specified below under ideal conditions is

    At what temperature will hydrogen molecules have the same KE per mol as nitrogen molecules at 280 K?

    The density of air at STP is 0.00130 g/ml. Thus, vapour density of air will be

    Which of the following change decrease the vapour pressure of water kept in a sealed vessel?

    According to kinetic theory of gases

    Which of the following are true?

    Boyle’s Iaw may be expressed as

    At absolute zero which of the following statements about an ideal gas are correct? 1) The motion of gaseous molecules ceases. 2) The volume of a gas becomes doubled. 3) The Kinetic Energy of gas molecules are doubled. 4) The volume of a gas molecule becomes zero.

    Hydrogen chloride gas is sent into a 100meter tube from one end ‘A’ and ammonia gas from the other end ‘B’ under similar conditions. At what distance from ‘A’ will be the two gases meet (in meters)

    At 400 k the Root Mean Square ( RMS ) speed of a gas ‘X’ (MW= 40) is equal to the most probable speed of a gas Y at 60K .The molecular weight of the gas = g.

    Two moles of a gas are confined to a five litre flask at 27 ° C. Calculate it pressure using van der Waals equation. For ammonia a = 6.25 atm l i t – 2 m o l – 2 and b = 0.037 lit mol–1.

    In which of the following cases Boyle’s law is not followed?

    If the distribution of molecular speeds of a gas is as per the figure shown below, then the ratio of the most probable, the average and the roots mean square speeds, respectively, is

    Based on the following isotherms, select correct statements.

    For 1 mol of an ideal gas, V 1 > V 2 > V 3 in Fig. (I), ” open=””> T 1 > T 2 T 3 in Fig. (II), P 1 > P 2 > P 3 in Fig. (III), and T 1 > T 2 > T 3 in Fig. (IV), then which curves are correct.

    The compressibility factor of gas is greater than unity at STP. Therefore

    Select the incorrect statement.

    Which has negligible translatory motion?

    Atmospheric pressures recorded in different cities are as follows: Cities Ooty Hyderabad Delhi Mumbai p in N/m 2 1 .01 × 10 5 1 .2 × 10 5 1 .02 × 10 5 1 .21 × 10 5 Consider the above data and mark the place at which Iiquid wilt boil first?

    How does the surface tension of a liquid vary with increase in temperature?

    If latent heat of vaporisation is L at boiling point T (K), then entropy of vaporisation is

    1 g of I 2 is in 10 mL CHCI 3 . When 400 mL H 2 O is added into it, concentration of I 2 in CHCI 3 falls to 0.80 g. Hence, partition coefficient of I 2 in CHCI 3 and H 2 O is

    Benzoic acid is distributed between water and benzene. Concentration of benzoic acid in two layers are: Conc. I II III C(in H 2 0) 0.1 M 0.2 M 0.3 M C(in benzene) 0.01 M 0.04 M 0.09 M Hence, benzoic acid is

    Distribution coefficient of solute X between ether and water is 2.1 g of solute X is in 100 g water. If X is extracted into ether by 100 mL of it, then

    Select the correct statement(s)

    The best scientific method to test the presence of water in a liquid is

    Distribution law cannot be applicable for a system in which I 2 is distributed in between

    A plot of volume (V) temperature (T) for a gas at constant pressure is a straight line passing through the origin. The plots at different values of pressure are shown in the figure. Which of the following order of pressure is correct for this gas

    Which pair of molecules has the strongest dipole-dipole interactions?

    The Vapour Density of gas is 11.2. The volume occupied by 11.2 g of this gas at NTP is

    In a gaseous mixture at 2O°C, the partial pressure of the components are, H 2 : 150 torr CH 4 : 300 torr CO 2 : 200 torr C 2 H 4 : 100 torr Volume per cent of H 2 is

    1g H 2 , 2g He and 3g NO are contained in 1 .1 L flask at 300 K. Total pressure exerted by the mixture is

    Which is not a correct representation of Boyle’s law?

    Dipole-dipole forces act between the molecules possessing permanent dipole. Ends of dipoles possess ‘partial charges’. The partial charge is

    A balloon has maximum capacity of 20 L. At one atmospheric pressure 10 L of air is fliled in the balloon. It will burst when pressure is (assuming isothermal condition)

    At 27°C, which set is not for Boyle’s law?

    The pressure of a 1: 4 mixture of dihydrogen and dioxygen enclosed in a vessel is one atmosphere. What would be the partial pressure of dioxygen?

    The relative rate of diffusion of a gas (molar mass = 128) as compared to oxygen is

    A quantity of gas is collected in a graduated tube over the mercury. The volume of gas at l8°C is 50.0 mL and the level of mercury in the tube is 100 mm above the outside mercury level. The barometer reads 750 torr. Hence, volume at STP is approximately

    If the density of a certain gas at 30°C and 768 torr is 1.35 kg /m 3 , then density at STP is

    “The total pressure exerted by a number of non reacting gases is equal to the sum of partial pressure of the gases under the same conditions”. It is known as

    For an ideal gas, which of the following graphs will not be straight line when all the other variables are held constant?

    A 1.00 L vessel containing 1.00 g H 2 gas at 27 o c is connected to a 2.00 L vessel containing 88.0 g CO 2 gas, at also 27°c. When the gases are completely mixed, total pressure is

    At what temperature, will the total KE of 0.30 mole of He be the same as the total KE of 0.40 mole Ar at 400 K?

    The molecular velocities of two gases at same temperature are u 1 and u 2 , their molar masses are m 1 and m 2 respectively. Which of the following expression is correct?

    50 mL of H 2 gas diffuses through a small hole from a vessel in 20 min. Time taken by 40 mL of O 2 gas to diffuse under similar conditions will be

    The average molecular speed is greatest in which of the following gas samples?

    At 298 K, which of the following gases has the lowest average molecular speed?

    It takes 26 s for 10 mL of H 2 to effuse through a porous membrane. It takes 130s for 10 mL of an unknown gas under identical condition to effuse. Hence, molecular weight of the unknown gas is (in g mol -l )

    KE per unit volume is

    Which of the following gases follows non-ideal behaviour?

    The ratio of van der Waals’ constants a and b, ( a b ) has the dimension of

    Gas deviates from ideal gas nature, because molecules

    The Vander Waals’ equation of state reduces itself to the ideal gas equation at

    For CO, isotherm is of the type as shown. Near the point A, compressibility factor Z is

    Which curve in the flgure represents the curve of ideal gas?

    In terms of critical constants, compressibility factor is

    A gas at a pressure of 5.0 atm is heated from 0° to 546°C and simultaneously compressed to one-third of its original volume. Hence, final pressure is

    At the top of the mountain the thermometer reads O°C and the barometer reads 71O mmHg. At the bottom of the mountain the temperature is 30°C and pressure is 760 mmHg. Densify of air at the top with that at the bottom is

    At low pressures, the van der Waals’ equation is written as p + a V 2 V = RT The compressibility factor is then equal to

    The compressibility factor of gas is less than unity at STP, therefore

    I, II, III are three isotherms respectively at T 1 , T 2 and T 3 . . Temperature will be in order

    Vander waals’ equation for one mole of CO 2 gas at low pressure will be

    In an auto engine with no pollution controls, about 5% of the fuel (C 8 H 18 ) is unburned. Molar ratio of CO and C 8 H 18 emitted in the exhaust gas is

    A gas in an open container is heated from 27°c to 127°C. The fraction of the original arnount of the gas remaining in the container will be

    The volume of helium gas is 44.8 L at

    The average molecular speed is greatest in which of the following gas samples?

    The density of neon will be minimum at

    The average velocity of an ideal gas molecule at 27°C is 0.3 ms -1 . The average velocity at 927°C will be

    A balloon fllled with ethyne is pricked with a sharp point and quickly dropped in a tank of Hz gas under identical conditions. After a while, the balloon will have

    A flask contains 12 g of a gas of relative molecular mass 120 at a pressure of 100 atm was evacuated by means of a pump until the pressure was 0.01 atm. Which of the following is the best estimate of the number of molecules Ieft in the flask? ( N o = 6 x 10 23 mol -1 )

    A vessel is filled with a mixture of oxygen and nitrogen. At what ratio of the partial pressures will the masses of the gases be identical?

    Gas O 2 N 2 NH 3 CH 4 a 1.360 1.390 4.170 2.253 The table indicates the value of van der Waals’ constant a. (in L 2 atm mol -2 ). The gas which can most easily be liquefied is

    The partial pressure of oxygen in air is 22 kPa. What is the oxygen content in Per cent volume?

    At what temperature will the totat KE of 0.3 mole of He be the same as the total KE of 0.40 mole of Ar at 400 K?

    A 350 mL sample of ammonia at 1.00 bar and 27°C is absorbed by water to form 500 mL of solution at that temperature and pressure. Molar concentration of arnmonia is

    Compressibility factor for CO 2 at 400 K and 71.0 bars is 0.8697. Molar volume of CO 2 under these conditions is

    Assume that for every increase in height of 1 m, pressure decreases by 10 mmHg. Initially an experimental air balloon of maximum 200 L capacity has 150 L air at 1 atm at sea-level. At what height, the balloon is expected to burst?

    A 10.0 cm column of air is trapped by a column of Hg, 4.00 cm long in capillary tube of uniform bore when the tube is held horizontally in a room at 1 atm. Length of the air column when the tube is held vertically with the open end up is

    The density of oxygen is 1,.43 g L -1 at STP, hence, density at O o C and 800 torr is

    Boyle’s law and Avogadro’s law are applicable under Iimiting condition. This limiting condition is

    A quantity of hydrogen is confined in a chamber of constant volume. When the chamber is immersed in a bath of melting ice, the pressure of the gas is 1000 torr. What is the temperature when the pressure is 400 torr?

    A sample of gas at 0°C and 1.00 atm pressure occupies 3.00 L. What change in temperature is necessary to adjust the pressure of that gas to 1.5 atm after it has been transferred to a 2.00 L container?

    By Avogadro’s law, V = kn If volume occupied by 1 mole of a gas at STP is 22.4 L, then k is if we take 0.5 mole of gas under same condition of temperature and pressure

    If 1 L of NH 3 is formed at STP according to reaction, N 2 + 3 H 2 ⟶ 2 NH 3 moles of H 2 required under identical condition would be

    Certain amount of gas occupies 1 L at STP. In which case number of molecules will change?

    A 1 L flask contains 32 g O 2 gas at 27°c. What mass of O 2 must be released to reduce the pressure in the flask to 12.315 atm?

    If X m , X p and X V represent mole, pressure and volume fractions respectively, then

    The density of phosphorus vapour at STP is 5.54 gL -1 . Hence, molecular formula of phosphorus is

    If 300 mL of a gas weighs 0.368 g at STP, molar mass of the gas is

    A 100 mL flask contained H 2 at 200 torr, and a 200 mL flask contained He at 100 torr. The two flask were, then connected so that each gas filled their combined volume. Assuming no change in temperature, total pressure is

    1 g Hz and x g O 2 gas exert a total pressure of 5 atm. At a given temperature partial pressure of O 2 gas is 4 atm, O 2 in the mixture is

    1 mole of O 2 and x mole of Ne in a 10 L flask constant temperature exert a pressure of 10 atm. If partial pressure of O 2 is 2 atm, moles of Ne in the mixture is

    Mole fraction of water vapour in the water saturated air is 0.02. If total pressure is 1 .2 atm, partial pressure of dry air is

    In the following reaction, we start with 2 moles of N 2 and 5 moles of H 2 exerting a total pressure of 7 atm at a given temperature in a closed vessel. When 50% of N 2 is converted into NH 3 N 2 + 3 H 2 ⟶ 2 NH 3 , partial pressure of NH 3 is

    A 3.00 L oxygen gas is collected over water at 27°C when the barometric pressure is 787 torr. If vapour pressure of water is 27 torr at 27°C, moles of O 2 gas will be

    Consider the following pairs of gases A and B. A B I. CO 2 N 2 O II. CO N 2 III. O 2 O 3 IV. H 2 O D 2 O V. 235 UF 6 238 UF 6 Relative rates of effusion of gases A and B is in the order

    Rate of effusion of LPG (a mixture of n-butane and propane) is 1.25 times that of SO 3 . Hence, mass fraction of n-butane in LPG is

    Compressibility factor for H 2 behaving as real gas is

    For critical constants, compression factor Z is

    For a given gas T c = 40 K hence, T i is

    The volume of 0.0168 mole of 0 2 obtained by thermal decomposition of KClO 3 and collected by displacement of water is 428 mL at a pressure of 754 mmHg at 25°C. The pressure of water Vapour at 25°C is

    The given graph represent the variations of compressibility factor ( Z ) = pV nRT versus p , for three real gases A, Band C. Identify the only incorrect statement.

    Densities of CO and N 2 are in the ratio of 1 : 2 and their temperatures are in the ratio of 2 :1. Thus the ratio of their pressure is

    Molar volume of CO 2 is maximum at

    Boyle’s law is represented by the equation

    Consider the following equations, I : dp dV T = k V II : dp dV T = − k V 2 III : dp dV T = − k V IV : V ∝ 1 p Boyle’s law is represented by

    Under which of the following conditions applied together, a gas deviates most from the ideal behaviour?

    A gas described by van der Waals’ equation

    If the rms velocities of nitrogen and oxygen molecules are same at two different temperatures and same pressure, then

    Which of the following statements are correct?

    Which of the following represents the molar volume of the gas correctly?

    To an evacuated vessel with movable piston under external pressure of 1 atm, 0.1 mole of He and 1.0 mole of unknown compound (vapour pressure 0.68 atm at 0°C) are introduced. Considering the ideal gas behaviour, the total volume (in litre) of the gases at 0°C is close to

    At 400 K, the root mean square (rms) speed of a gas X (molecular weight = 40) is equal to the most probable speed of gas Y at 60K. The molecular weight of the gas Y is

    A 4 : 1, molar mixture of He and CH 4 is contained in a vessel at 2O bar pressure. Due to a hole in the vessel, the gas mixture leakes out. The composition of the mixture effusing out initally is x : 1. What is the value of x?

    A vessel of volume 0.2 m 3 contains H 2 gas C v = 5 cal mol -1 K -1 at 300K and 1 atm pressure. The heat required to raise the temperature to 400 K is—- k calories

    At x X 10 2 temperature, the rms speed of hydrogen molecules is same as that of oxygen molecule at 1327°C? The value of x is

    Pressure of the 1 g of an ideal gas A at 27°C is found to be 2 bar. When 2 g of another ideal gas B is introduced in the same flask at Same temperature, the pressure become 3 bar. Relationship between their molecular masses is M B = xMA. Find the value of x.

    In a hospital, an oxygen cylinder hold 10L of oxygen at 200 atm pressure. If a patient breath is 0.50 mL of oxygen at 1.0 atm with each breath and the cylinder will be sufficient for x x l0 6 breaths. Find the value of x. Assume that all the data is at 37°C.

    The ratio between the root mean square velocity of H 2 at 50 K and that of O 2 at 800 K is

    van der Waals’ equation for calculating the pressure of a non ideal gas is P + an 2 V 2 ( V − nb ) = nRT van der Waals’ suggested that the pressure exerted by an ideal gas, P ideal , is related to the experimentally measured pressure, P real by the equation P ideal = P real + an 2 V 2 ↑ ↑ observed correction pressure term Constant ‘a’ is measure of intermolecular interaction between gaseous molecules that gives rise to non-ideal behavior. It depends upon how frequently any two molecules approach each other closely. Another correction concerns the volume occupied by the gas molecules. In the ideal gas equation, V represents the volume of the container. However, each molecule does occupy a finite, although small, intrinsic volume, so the effective volume of the gas becomes (V – nb), where n is the number of moles of the gas and b is a constant. The term nb represents the volume occupied by gas particles present in n moles of the gas. Having taken into account the corrections for pressure and volume, we can rewrite the ideal gas equation as follow P + an 2 V 2 ( V − nb ) = nRT corrected corrected pressure volume

    A manometer contains a liquid of density 5.44 g/cm is attached to a flask containing gas ‘A as follows

    Which of the following curves represent(s) Boyle’s law?

    If a gas expands at constant temperature:

    Indicate the correct statement for equal volumes of N 2 (g) and CO 2 (g) at 25°C and 1 atm.

    Select the incorrect statement(s):

    If an ideal gas is heated at constant pressure:

    Select the correct statement(s) among the following

    A gaseous mixture containing equal moles of H 2 ,O 2 and He is subjected to series of effusion steps. The composition (by moles) of effused mixture after 4 effusion steps is x: 1 : y respectively. Then find the value of x y

    Collapsible balloon is inflated to a volume of 10L at a pressure of 1 atm. When the balloon is immersed to the bottom of a lake, its volume reduce to 1.25 L. Assuming atmospheric pressure to be equivalent to 10m column of water and no change in temperature, if the depth of the lake is x × 10 3 cm, what is the value of x?

    Which is/are correct for real gases?

    One mole of a gas changed from its initial state (15L.,2 atm) to final state (4L, 10 atm) reversibly. If this change can be represented by a straight line in P -V curve, maximum temperature (approximate) the gas attained is x × 10 2 K. Then find the value of x.

    Under the identical conditions of temperature, the density of a gas X is two times to that of gas Y while molecular mass of gas Y is three times that of X. Calculate the ratio of pressure of X and Y

    If an ideal gas at 100 K is heated to 109 K in a rigid container, the pressure increases by X%. What is the value of X?

    A flask has 10 gas particles, out of which four particles are moving at 7 ms -1 and the remaining are moving at the same speed of ‘X’ ms -1 . If the r.m.s. of the gas is 5 ms -1 , what is the value of X ?

    Select the correct statements(s):

    A gas described by Vander Waals’ equation, Except the option

    The intermolecular attraction of molecules for a real gas is an important aspect

    At identical temperature and pressure the rate of diffusion of hydrogen gas is 3 3 times that of a hydrocarbon having molecular formula C n H 2 n − 2 . The value of n is:

    The ratio of root mean square speed of H 2 gas at 50 K and that of O 2 gas at 800 K is

    The volume occupied by 8.8 g of CO 2 at 31.1°C and 1 bar pressure (in L) is:

    The pressure exerted by 1 mol of CO 2 at 273 K is 34.98 atm. Assuming that volume occupied by CO 2 molecules is negligible, the value of van der Waals’ constant for attraction of CO 2 gas is —————-dm 6 atm mol -2

    The value of PV for 5.6 lit of an ideal gas is…….. RT at NTP.

    At 25°C and 730 mm pressure, 730 ml of dry oxygen was collected. If the temperature is kept constant, calculate volume in (L) that oxygen will occupy at 760 mm pressure.

    The correctly represented equation for Critical V,T and P relationship is

    If equal volumes of oxygen and nitrogen undergoing diffusion, if oxygen diffuses in l0 min, then under similar conditions time period for diffusion of nitrogen is x . y minutes, then the value of x . y is

    At 25°C and 730 torr pressure, 730 cm 3 of dry oxygen was collected. If the temperature is kept constant, calculate volume in (dm 3 ) that oxygen will occupy at 760 torr pressure

    At what temperature (in Kelvin) will the kinetic energy of 0.3 mole of ‘He’ be the same that of 0.4 mole of argon at 400 K?

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